Water orb: Go to the water obelisk and use an uncharged orb with the "Charge Water Orb" spell (provided you have a level 56 magic, 3 cosmic runes, and 30 water runes) or purchase from the Grand Exchange.

3

Travel to any summoning obelisk.

4

Click on the obelisk. Choose the hydra from the popup screen and you will receive pouches in your inventory.

5

Decide what you want to do with the pouches. Use the pouches to make summoning familiars, sell them at the Grand Exchange, or turn them into summoning scrolls. To change them into scrolls, click on the obelisk again and use the pouch.

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